Some of the gear developed and used in performance and recording over the years...

1987—early ink-on-paper diagram outlining the layout of the original Feedback Machine.

1987-1993—The "Feedback Workstation". This is how carried away you can get,and it developed over years. Based on four digital delays. Included are custom mixer with feedback matrix, a smaller submixer, two DIY ring modulators, a nutty timeclock​generator/enveloper/delay modulator, etc.

1989—The "carry on" Feedback Machine, on a stand for performance. A real rat's nest​inside, and a touchy unit, but it rocked in its way. Mounted on top is a device called The Squealer.

2000s—Advances in processor design allow for more sound-bending in smaller and cheaperdevices than ever, and there is less and less need to build extensive mixing arrangements.​The feedback mixer here is very minimal and easy to construct.

2017–The variety and flexibility of Eurorack modules are now the way to go! Matrix mixers of course, as well as delays, pitch shifters, phase shifters, ring modulators, resonating filters and more. Utilized on "superpositions" and "ether music". Seen at top, a modified Vectrex gaming console gives lissajou display.